Adjustable front rifle-sight



J. H. FLETCHER AND E. L. MEACHAM.

ADJUSTABLE FRONT RIFLE SIGHT.

APPLICATION FILED 050.141.1917.

1,365,236; Patented Jan. 11,1921.

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awe/whom; FlLMeac m JHFM UNITED STATES PATENT OFFICE-.-

J'AMES H. FLETCHER AND ELWIN L. MEACI-IAM. 0F SPRING-FIELD, MASSACHUSETTS.

ADJUSTABLE FRONT RIFLE-SIGHT,

Specification of Letters Patent.

Patented Jan. 11, 1921.

Application filed December 14, 1917. Serial No. 207,103.

To all whom it may concern:

Be it known that we, J ARIES H. FLETCHER and ELWIN L. MEACHAM, citizens of the United States, residing at Springfield, in the county of Hampdenand State. of Massachusetts, have invented certain new and useful Improvements in Adjustable Front Rifle-Sights; and we do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertainsto make and use the same.

This invention relates to sights for firearms and the primary object of the invention is to provide an improved sight having aplurality of'tips or beads of different characters formed thereon, the sight being mounted-on the gun barrel-in such a manner that any. one of theitips or beads can be quickly brought into operative position to suit the required conditions.

Another object of the invention is to provide an improved sight rotatably mounted on the gun barrel and having a plurality of beads formed thereon, and having a means for engaging the sight to lock the same in a. set position and prevent movement thereof.

A still further object of the invention is to provide a gun sight having a plurality of beads formed thereon, said beads being formed of metals of different colors, so that be hereinafter more specifically described,

claimed and illustrated in the accompanying drawing forming a part thereof, in which Figure 1 is a side elevation of the improved sight attached to a gun barrel,

Fig. 2 is a section through the gun barrel showing a front elevation of the improved sight, and

Fig. 3 is a transverse section taken on the line 33 of Fig. 1.

Referring to the drawing in detail wherein similar reference numerals designate corresponding parts throughout the several views, the numeral 1 generally indicates the improved sight which includes a base plate 2 having a lower transversely extending dove-tail extension 3, which is adapted to lit in a dove-tail groove 4- formed in the barrel 5 of anytype or preferred form of gun. The upper surface of the base plate 2 is provided with the upwardly extending body plate 6, which extends longitudinally of the barrel5 and the edges of the body plate are rounded as at 7 to provide a suitable ornamental appearance. The body plate 6 is formed with a longitudinally extending inwardly directed groove 8 which is formed to accommodate the through the central portion of the disk 9- semi circ-ular and is secured inthe side walls of the,

groove 8 and the same rotatably supports the disk. The disk 9 isrovided with a plurality of sights 11 of di erent characters, so that the gun can be used for long or short range shooting. The sights 11 are also formed of different metals, such as copper, silver and the like so that the same can be used for various back grounds. This allows a sight to be used which will contrast with the back ground so that the sights can be readily seen.

A plurality of depressions 13 are formed in the sight disk 9 around the pivot pin 10 which are arranged to successively register with the aperture 14 formed in the body plate 6.

The depressions 13 are so arrangedthat when one ofthe same is in registration with the aperture 14: one of the beads 11 is in operative position. A plunger 15 is slidably mounted in the aperture 14 and is provided with an enlarged end 16 which is adapted to fit in any one of the depressions 13. An expansion coil spring 17 is wound around the plunger 15 and bears against the enlarged head 16 and against an end wall 18 secured in the body 6. The end wall 18 is provided with a suitable opening for receiv ing the plunger 15. A roughened thumb piece 19 is formed on the outer end of the plunger 15 for withdrawing the same from the depressions 13 and against the tension of the coil spring 17. I

From the foregoing description it will be seen that an improved gun sight is provided that can be instantly adjusted so that the desired bead can be brought into and held in operative position.

The disk 9 is out So as to not only provide the beads 11, but to also provide means whereby the disk can be gripped so as to rotate the same. The disk 9 is cut radially inwardly at different points to conform to the number of beads and the radially extending cuts end short of the center of the disk and provide" a number of abrupt shoulders 20 by means of which the fingers of the user can readily push the same for adjusting the sight for the different beads. The disk is then arcuately out from the abrupt shoulder 20 to the opposite bead and these portions provide a curved guide surface 21 for guiding the finger of the user to the abrupt shoulder. i

In practice, We have found that the form of our invention, illustrated in the accompanying drawings and referred to in the above description, as the preferred embodiment, is the most efficient and practical; yet realizing that the conditions concurrent with the adoption of our device will necessarily vary, we desire to emphasize the fact that various minor changes in, details of eonstruction, proportion and arrangement of parts may be resorted to, when required,

without sacrificing any of the advantages of our invention as set forth.

What we claim as new is In combination with a gun barrel, a sight block having a base plate adapted to be secured to the barrel, and a vertically disposed body plate extending longitudinally of the bore of the barrel and provided with an inwardly extending substantially semi-circular recess, a disk located in the recess and pivoted at its center to the body plate, a plurality of sights carried by the disk at the peripheral portion thereof, said sights be ing tangentially disposed with relation to the disk, the disk being provided at its side with a plurality of recesses arranged concentrically'about the pivot of the disk, there being a recess located between the ends of each sight opening, and a retractable spring pressed pin carried by said. body plate for engaging in any one of said recesses in said disk to prevent rotary movement thereof.

In testimony whereof we affix our signatures in presence of two witnesses.

. JAMES H. FLETCHER.

V ELWIN L. MEACHAM. lVitnesses:

EUGENE A.,LACY,

MICHAEL J. KAKLEY. 

